---
title: Log Entry
description: A template that represents a single runtime log entry.
location: https://istio.io/docs/reference/config/policy-and-telemetry/templates/logentry.html
layout: protoc-gen-docs
generator: protoc-gen-docs
aliases:
  - /docs/reference/config/template/logentry.html
number_of_entries: 1
---
<p>The <code>logentry</code> template represents an individual entry within a log.</p>

<p>Example config:</p>

<pre><code class="language-yaml">apiVersion: &quot;config.istio.io/v1alpha2&quot;
kind: logentry
metadata:
  name: accesslog
  namespace: istio-system
spec:
  severity: '&quot;Default&quot;'
  timestamp: request.time
  variables:
    sourceIp: source.ip | ip(&quot;0.0.0.0&quot;)
    destinationIp: destination.ip | ip(&quot;0.0.0.0&quot;)
    sourceUser: source.principal | &quot;&quot;
    method: request.method | &quot;&quot;
    url: request.path | &quot;&quot;
    protocol: request.scheme | &quot;http&quot;
    responseCode: response.code | 0
    responseSize: response.size | 0
    requestSize: request.size | 0
    latency: response.duration | &quot;0ms&quot;
  monitored_resource_type: '&quot;UNSPECIFIED&quot;'
</code></pre>

<h2 id="Template">Template</h2>
<section>
<p>The <code>logentry</code> template represents an individual entry within a log.</p>

<p>When writing the configuration, the value for the fields associated with this template can either be a
literal or an <a href="https://istio.io/docs/reference//config/policy-and-telemetry/expression-language/">expression</a>. Please note that if the datatype of a field is not istio.policy.v1beta1.Value,
then the expression&rsquo;s <a href="https://istio.io/docs/reference//config/policy-and-telemetry/expression-language/#type-checking">inferred type</a> must match the datatype of the field.</p>

<table class="message-fields">
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr id="Template-variables">
<td><code>variables</code></td>
<td><code>map&lt;string,&nbsp;<a href="https://istio.io/docs/reference/config/policy-and-telemetry/istio.policy.v1beta1.html#Value">istio.policy.v1beta1.Value</a>&gt;</code></td>
<td>
<p>Variables that are delivered for each log entry.</p>

</td>
</tr>
<tr id="Template-timestamp">
<td><code>timestamp</code></td>
<td><code><a href="https://istio.io/docs/reference/config/policy-and-telemetry/istio.policy.v1beta1.html#TimeStamp">istio.policy.v1beta1.TimeStamp</a></code></td>
<td>
<p>Timestamp is the time value for the log entry</p>

</td>
</tr>
<tr id="Template-severity">
<td><code>severity</code></td>
<td><code>string</code></td>
<td>
<p>Severity indicates the importance of the log entry.</p>

</td>
</tr>
<tr id="Template-monitored_resource_type">
<td><code>monitoredResourceType</code></td>
<td><code>string</code></td>
<td>
<p>Optional. An expression to compute the type of the monitored resource this log entry is being recorded on.
If the logging backend supports monitored resources, these fields are used to populate that resource.
Otherwise these fields will be ignored by the adapter.</p>

</td>
</tr>
<tr id="Template-monitored_resource_dimensions">
<td><code>monitoredResourceDimensions</code></td>
<td><code>map&lt;string,&nbsp;<a href="https://istio.io/docs/reference/config/policy-and-telemetry/istio.policy.v1beta1.html#Value">istio.policy.v1beta1.Value</a>&gt;</code></td>
<td>
<p>Optional. A set of expressions that will form the dimensions of the monitored resource this log entry is being
recorded on. If the logging backend supports monitored resources, these fields are used to populate that resource.
Otherwise these fields will be ignored by the adapter.</p>

</td>
</tr>
</tbody>
</table>
</section>
